EP3813768A2 - Produits à deux phases - Google Patents

Produits à deux phases

Info

Publication number
EP3813768A2
EP3813768A2 EP19736915.0A EP19736915A EP3813768A2 EP 3813768 A2 EP3813768 A2 EP 3813768A2 EP 19736915 A EP19736915 A EP 19736915A EP 3813768 A2 EP3813768 A2 EP 3813768A2
Authority
EP
European Patent Office
Prior art keywords
dispensed product
discrete dispensed
discrete
product
perimeter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19736915.0A
Other languages
German (de)
English (en)
Inventor
Joseph Michael Zukowski
Sudeep CHAKRAVARTY
Yu Wang
Suxuan Gong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Publication of EP3813768A2 publication Critical patent/EP3813768A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
    • A61K8/4906—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with one nitrogen as the only hetero atom
    • A61K8/4926—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with one nitrogen as the only hetero atom having six membered rings
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/24—Casings for two or more cosmetics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/042—Gels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/11—Encapsulated compositions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A61K8/365—Hydroxycarboxylic acids; Ketocarboxylic acids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/67—Vitamins
    • A61K8/673—Vitamin B group
    • A61K8/675—Vitamin B3 or vitamin B3 active, e.g. nicotinamide, nicotinic acid, nicotinyl aldehyde
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A61K8/731—Cellulose; Quaternized cellulose derivatives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • A61K8/8152—Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1081—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping
    • B05B11/1084—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping each liquid or other fluent material being pumped by a separate pump
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/05—Details of containers
    • A45D2200/054—Means for supplying liquid to the outlet of the container
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
    • A61K2800/26—Optical properties
    • A61K2800/262—Transparent; Translucent
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/42—Colour properties
    • A61K2800/43—Pigments; Dyes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
    • A61K2800/87—Application Devices; Containers; Packaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
    • A61K2800/88—Two- or multipart kits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0884—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being aligned

Definitions

  • the present invention relates generally to dual phase products, especially suitable for personal care.
  • Dual phase products are generally known.
  • One way to dispense such products are by side- by-side dual dispensers.
  • Such products are available in at least several consumer good categories including dental care and skin care.
  • consumers are more discerning, especially given the myriad of choices available in the marketplace. This is particularly true in categories such as beauty care where consumers are looking for premium experience. Many of these premium experiences mimic nature. Therefore, there is a continuing need for products that not only continue to deliver benefits characteristic of the product category that consumers expect but also provide a premium experience that mimics nature.
  • a discrete dispensed product comprising: a first portion; and a second portion at least partially surrounding the first portion.
  • the discrete dispensed product mimics roe (e.g., caviar, salmon eggs, etc.) thereby conjuring images of premium and distinct offerings.
  • a second transparent portion partially surrounds a non-transparent first portion.
  • the non-transparent first portion has red-orange color thereby mimicking salmon eggs.
  • a discrete dispensed product comprising: a first portion; and a second portion at least partially surrounds the first portion at least more than 50% of a maximum perimeter of the first portion, wherein the maximum perimeter is the perimeter defined around the largest cross-sectional area of the first portion, wherein said largest cross-sectional area is either in a plane parallel to or in the same plane as a planar contact surface of the discrete dispensed product.
  • a discrete dispensed product comprising: a first portion; and a second portion at least partially surrounding the first portion, wherein the second portion comprises a Crossover Stress assessed by a Portion Oscillatory Rheometry Test Method (“PORTM”) as described herein, wherein the Crossover Stress of the second portion is equal to or greater than 10 Pascals (Pa).
  • PORTM Portion Oscillatory Rheometry Test Method
  • a discrete dispensed product comprising: a first portion; and a second portion at least partially surrounding the first portion, wherein the second portion is at least partially transparent, preferably transparent.
  • the dispenser comprises a first reservoir and a second reservoir.
  • the first reservoir contains a first composition and the second reservoir contains a second composition, wherein the second composition is a least partially transparent.
  • the first reservoir is in fluid communication with a first fluid channel comprising a first outlet orifice.
  • the second reservoir is in fluid communication with a second fluid channel comprising a second outlet orifice.
  • the second outlet orifice at least partially surrounds a perimeter of the first outlet orifice.
  • a first composition comprising a skin care active such as niacinamide, wherein the first composition is at relatively neutral pH.
  • the neutral pH helps with shelf stability of the active.
  • the second composition is a relatively acidic pH.
  • Figure 1A - 1F are a top view of different examples of a discrete dispensed product (wherein 1F is a comparative example);
  • Figure 2 A - 2F are a side view of different examples of the discrete dispensed product
  • Figure 3 is top view measuring distance between a dispensed product center axis and a first portion center axis
  • Figure 4 is a front view of a dispenser comprising a nozzle capable of dispensing a discrete dispensed product
  • Figure 5A-5D are each a cross sectional view of nozzle examples that may be used with the dispenser of figure 4
  • Figure 6 is cross section view of a nozzle showing the percentage that a second orifice is surrounding a first orifice;
  • Figures 7 A - 7E is Table 1 of a formulation and data for comparative example I;
  • Figures 8 A - 8E is Table 2 of a formulation and data for inventive examples II and II;
  • Figures 9 A - 9E is Table 3 of a formulation and data for inventive examples IV and V;
  • Figures 10A -10B are samples from a consumer preference study, Figure 10A is inventive and 10B is comparative;
  • Figure 11 is showing the percentage by which the second portion surrounds a maximum perimeter of the first portion of comparative sample of Figure 10B;
  • Figure 12 is a cross section view of a side-by-side nozzle that is used to make the comparative sample of Figure 10B;
  • Figure 13A and 13B are each discrete dispensed products assessed for the percentage by which the second portion surrounds a maximum perimeter of the first portion;
  • Figure 14 illustrates how to calculate said percentage of the discrete dispensed product of Figure 13B.
  • the terms“comprise”,“comprises”,“comprising”,“include”,“includes”, “including”,“contain”,“contains”, and“containing” are meant to be non-limiting, i.e., other steps and other sections which do not affect the end of result can be added.
  • the above terms encompass the terms“consisting of’ and“consisting essentially of’.
  • the words "preferred”, “preferably” and variants refer to embodiments of the invention that afford certain benefits, under certain circumstances. However, other embodiments may also be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, and is not intended to exclude other embodiments from the scope of the invention.
  • oral care means a composition, which in the ordinary course of usage, is not intentionally swallowed for purposes of systemic administration of particular therapeutic agents, but is rather retained in the oral cavity for a time sufficient to contact dental surfaces or oral tissues.
  • personal care means a topical composition for regulating a condition of mammalian keratinous tissue (e.g., skin, hair, finger nails).
  • skin care means regulating and/or improving a skin condition.
  • Some non- limiting examples include improving skin appearance and/or feel by providing a smoother, more even appearance and/or feel; increasing the thickness of one or more layers of the skin; improving the elasticity or resiliency of the skin; improving the firmness of the skin; and reducing the oily, shiny, and/or dull appearance of skin, improving the hydration status or moisturization of the skin, improving the appearance of fine lines and/or wrinkles, improving skin exfoliation or desquamation, plumping the skin, improving skin barrier properties, improve skin tone, reducing the appearance of redness or skin blotches, and/or improving the brightness, radiancy, or translucency of skin.
  • skin care active means a compound or combination of compounds that, when applied to skin, provide an acute and/or chronic benefit to skin or a type of cell commonly found therein. Skin care actives may regulate and/or improve skin or its associated cells (e.g., improve skin elasticity, hydration, skin barrier function, and/or cell metabolism).
  • the discrete dispensed product comprises: a first portion; and a second portion at least partially surrounding the first portion.
  • the dispensed product is applicable, but not limited, to beauty care, personal grooming, personal cleansing, fabric care, home care, skin care, oral care, dish care, health care, baby care, feminine care, and hair care product categories.
  • the dispensed product comprises one or more actives providing a benefit to the respective product category.
  • a dispensed fabric care product may comprise a fabric care active.
  • Such actives may include a surfactant for fabric cleaning.
  • a dispensed hair care product may comprise a hair care active.
  • Such actives may include a hair conditioning active.
  • a dispensed skin care product comprising a skin care active.
  • the dispensed product may be formulated as a leave-on product like a skin care moisturizing cream, or as a rinse-off product like a facial cleanser or a shampoo, or may even be formulated as a combination of leave- on and rinse-off like a hair conditioner or skin mask.
  • the dispensed product comprises a second portion at least partially surrounding the first portion.
  • the second portion surrounds at least more than 50% of a maximum perimeter of the first portion, wherein the maximum perimeter is the perimeter defined around the largest cross-sectional area of the first portion, wherein said largest cross section area is either in a plane parallel to or in the same plane as a planar contact surface of the dispensed product.
  • the planar contact surface area of the dispensed product is that portion making contact to a planar target surface.
  • the discrete dispensed product when made for a skin care application can comprise a skin care active and the planar target surface can be one or more of a human palm, backside of the palm, one of the fingers or thumb, wrist, forearm, backside of the forearm, facial skin etc.
  • a planar Lenta Card may serve as the planar target surface.
  • the second portion surrounds from 55% to 100% of the maximum perimeter of the first portion, yet more preferably 60% to 100%, yet still more preferably from 70% to 100%.
  • the second portion surrounds from 60% to 95%, or from 70% to 80%, or from 51% to 65%, or from 85% to 100%, or from 90% to 98%, of the maximum perimeter of the first portion.
  • Non-limiting percentage examples include: 55%, 60%, 65%, 70%, 75%, 80%, 90%, 95%, 98%, 99%, or 100%. These percentages may also be generally applicable to those examples wherein the second portion at least partially surrounds a third or more portions.
  • One method of assessing the percentage of the second portion surrounding the first portion is described in the Examples section below.
  • Figures 1A-1E are a top view, schematic representation, of different examples of the discrete dispensed product (1, 201, 301, 401, 501, respectively).
  • the second portion (3, 203, 303, 403, 503) surrounds at least more than 50% of a maximum perimeter of the first portion (5, 205, 305, 405, 505, 605, respectively).
  • the size and location of the first portion can vary (relatively to the second portion).
  • Figure 1F a top view, schematic representation, of a comparative example of a discrete dispensed product (601).
  • the second portion (603) and the first portion (605) are essentially next to each other as dispensed from a classic side-by-side dispenser.
  • the dispensed product comprises substantially hemi- spherical shape, preferably a compressed substantially hemi-spherical shape.
  • the first portion comprises generally a substantially spheroid shape, preferably generally a substantially elongated spheroid shape.
  • the first portion (or third or more portions) is at least partially, preferably fully suspended in the second portion.
  • a length of the dispensed product is from 0.5 cm to 2.5 cm, preferably from 1 cm to 2 cm, wherein the length is the longest dimension measured along a planar contact surface of the dispensed product.
  • Non-limiting examples of length include 0.75 cm, 1.5 cm, or 2 cm.
  • planar contact surface is that portion which the dispensed product contacts a planar target surface.
  • the planar target surface is a surface in need of a treatment for application of the discrete dispensed product.
  • a flat Leneta Card Opta Card Form 2A, Leneta Company, Inc, Mahwah, NJ, USA, hereafter referred to as “Leneta Card” or equivalent
  • the dispensed product comprises a height from 0.2 cm to 2 cm, preferably from 0.5 cm to 1 cm, wherein the height is measured in a plane orthogonal to the planar contact surface of the dispensed product.
  • Non-limiting examples of height include, 0.3 cm, 0.5 cm, or 0.7 cm.
  • the dispensed product comprises a width from 0.5 cm to 2.5 cm, preferably from 1 cm to 2 cm width, wherein the width is measured 90 degrees relative to the length.
  • Non-limiting examples of width include 0.8 cm, 1.5 cm, or 1.7 cm.
  • the dispensed product has a ratio of the length to the width from 4:1 to 1:1, preferably from 3: 1 to 1:1, more preferably from 2:1 to 1:1.
  • the dispensed product has a ratio of the length to the height from 5: 1 to 1:2, preferably from 3.75:1 to 0.9:1, more preferably from 3:1 to 0.9: 1.
  • Figure 2A - 2F is side view, schematic representation, of different examples of the discrete dispensed product (11, 211, 311, 411, 511, 611, respectively).
  • the second portion (13, 213, 313, 413, 513, 613, respectively) surrounds at least more than 50% of a maximum perimeter of the first portion (15, 215, 315, 415, 515, 615).
  • the size and location of the first portion can vary (relative to the second portion).
  • Fig. 2E is an example of a dispensed product (511) having a relatively high length to height ratio
  • Fig. 2F is a dispensed product (611) having a relatively low length to height ratio.
  • the dimension of the first portion is described. Length of the first portion is from 0.1 cm to 2 cm, preferably 0.2 cm to 1 cm. Non- limiting examples of this length are 0.1, 0.2, 0.5, or 0.7 cm.
  • the length of the first portion is measured as the longest dimension in a largest cross-sectional area of the first portion, wherein the largest cross-sectional area is either in a plane parallel to or in the same plane as a planar contact surface of the dispensed product.
  • the height of the first portion is from 0.1 cm to 1.25 cm, preferably 0.2 cm to 1 cm, wherein the height of the first portion is measured in a plane orthogonal to the planar contact surface of the dispensed product.
  • Non-limiting examples of this height are 0.1, 0.2, 0.5, or 0.7 cm.
  • the width of the first portion is from 0.1 cm to 1.25 cm, preferably 0.2 cm to 1 cm, wherein the width of the first portion is measured 90 degrees relative to the length of the first portion and of the largest cross-sectional area of the first portion.
  • Non-limiting examples of this width are 0.1, 0.2, 0.5, or 0.7 cm
  • Figure 3 is a top view, schematic representation of a discrete dispensed product (21), the distance“D” (27) between a dispensed product center axis (29) and a first portion center axis (28) is less than 50% of the length of the discrete dispensed product (wherein said“length” is defined above).
  • a second portion (25) surrounds at least more than 50% of a maximum perimeter of a first portion (23).
  • the dispensed product center axis is defined.
  • the dispensed product comprises a dispensed product centroid on a planar contact surface of the dispensed product.
  • the dispensed product center axis extends through the dispensed product centroid and is orthogonal to the planar contact surface of the dispensed care product.
  • the first portion center axis is defined.
  • the first portion comprises a first portion centroid on a largest cross-sectional area of the first portion and a first portion center axis.
  • the largest cross-sectional area is either in a plane parallel to or in the same plane as the planar contact surface of the dispensed product.
  • the first portion center axis extends through the first portion centroid and is orthogonal to the planar contact surface of the dispensed care product.
  • the distance between the dispensed product center axis and the first portion center axis is from is less than 40% of the length of the discrete dispensed product, preferably less than 30% of the length, more preferably less than 15% of the length. Non-limiting examples are less than 40%, less than 30%, or less than 15% of the length.
  • the volume and mass of the discrete dispensed product, and the first and second portions are described.
  • the volume ratio of the first portion to the second portion is from 1:10 to 2:1, preferably 1:5 to 1:1, more preferably from 1:4 to 1:2, even more preferably 1:3.
  • the volume of the first portion and the second portion are each independently selected from 0.05 ml to 1.5 ml, more preferably from 0.075 ml to 1.0 ml, yet still more preferably from 0.1 ml to 0.5 ml.
  • Non-limiting examples of this volume are 0.08 ml, 0.1 ml, 0.15ml, 0.2 ml.
  • the total volume of the dispensed product is from 0.1 ml to 3 ml, more preferably from 0.15 ml to 2 ml, yet still more preferably from 0.2 ml to 1 ml.
  • Non-limiting examples of this total volume are 0.1 ml, 0.2 ml, 0.3 ml, 0.4 ml, 0.5 ml, 1.5 ml, 2 ml, or 2.5 ml.
  • the mass ratio of the first portion to the second portion is from 1:10 to 2:1, preferably 1:5 to 1: 1, more preferably from 1:4 to 1:2, even more preferably 1:3.
  • the mass of the first portion and the second portion are each independently selected from 0.05 g to 1.5 g, more preferably from 0.075 g to 1 g, yet still more preferably from 0.1 g to 0.5 g.
  • this mass are 0.08 g, 0.1 g, 0.15 g, 0.2 g, or 0.3 g.
  • the total mass of the dispensed product is from 0.1 g to 3 g, more preferably from 0.15 g to 2 g, yet still more preferably from 0.2 g to 1 g.
  • Non- limiting examples of this total mass are 0.1 g, 0.2 g, 0.3 g, 0.4 g, 0.5 g, 0.7 g, 1 g, 1.5 g, 1.7 g, or 1.9 g.
  • the discrete dispensed product is a shampoo, wherein the total mass is from 3 g to 15 g, preferably from 9 g to l3g. In another example the discrete dispensed product is a skin care mask, wherein the total mass is from 5 g to 15 g, preferably from 8 g to 12 g. In another example, the discrete dispensed product is an oral care product, wherein the total mass is from 1 g to 3 g, preferably the oral care product is a dentifrice.
  • first and second compositions Formulary ingredients of the first and second compositions are described. Many of the examples are for skin care applications. However, one skilled in the art can appropriately formulate the first and second compositions depending on the product focus area. These ingredients include structuring agents, gel networks, colorants, opacifiers, and preferred actives. Although the terms “first composition” and“second composition” are used, the terms“first portion” and“second portion” are interchangeable, respectively.
  • the first and second compositions of the present invention may comprise structuring agents, which may be used to increase viscosity, thicken, solidify, or provide solid or crystalline structure to the compositions.
  • Structuring agents are typically grouped based on solubility, dispersibility, or phase compatibility.
  • aqueous or water structuring agents include polymeric agents, natural or synthetic gums, polysaccharides, and the like.
  • Suitable classes of structuring agents include but are not limited to carboxylic acid polymers, polyacrylamide polymers, sulfonated polymers, copolymers thereof, hydrophobically modified derivatives thereof, gums, celluloses, superabsorbent polymers, and mixtures thereof.
  • each composition may independently comprise from 0.0001%, 0.001%, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 2%, 3%, 5% to 25%, 20%, 10%, 7%, 5%, 4%, or 2%, by weight of the respective composition, of one or more structuring agents.
  • Suitable polysaccharides include alkyl hydroxyalkyl cellulose ethers, such as Hydroxypropylmethylcellulose Stearoxy Ether. This material is sold under the tradename of Sangelose 60L and 90L from Daido Chemical Corp.
  • Suitable polymers include crosslinked poly acrylates, such as, for example, Polyacrylate 6 Crosspolymer, sold under the tradename of Sepimax Zen, from Seppic.
  • Another polymer includes crosslinked polymers, the monomers of which are at least partially composed of acryloyldimethyltaurate monomers, such as, for example Sodium Polyacryloyldimethyl Taurate, sold under the tradename of Aristoflex Silk, from Clariant.
  • acryloyldimethyltaurate monomers such as, for example Sodium Polyacryloyldimethyl Taurate, sold under the tradename of Aristoflex Silk, from Clariant.
  • superabsorbent polymer is understood to mean a polymer which is capable, in its dry state, of spontaneously absorbing at least 20 times its own weight of aqueous fluid, in particular of water and especially of distilled water.
  • oil structuring agents examples include silicone and organic based materials. Suitable ranges of oil structuring agents are from 0.01%, 0.05%, 0.1% 0.5%, 1%, 2.5%, 5%, or 10% to 30%, 25%, 20%, 15%, 10%, or 5%.
  • Suitable oil phase structuring agents may be silicone based, such as silicone elastomers, silicone gums, silicone waxes, linear silicones having a degree of polymerization allowing the silicone to increase the viscosity of the oil phase.
  • silicone structuring agents include, but are not limited to, silicone elastomers, silicone gums, and silicone waxes.
  • the first composition or the second composition may each have a relatively high-level of water.
  • the second composition may comprise at least 60%, preferably from 70% to 90% more preferably from 75% to 85% water, by weight of the second composition.
  • the first compositions may comprise at least 60%, preferably from 70% to 90% more preferably from 75% to 85% water, by weight of the second composition.
  • compositions herein may each independently comprise a gel-network.
  • The“gel- network” is comprised of a hydrophobic structuring agent and a non-ionic, hydrophilic surfactant. Preferred levels of these individual components are specified below, however the total gel-network portion of the composition is limited separately from its individual components.
  • Preferred compositions comprise from 1 % to 20%, more preferably from 1% to 10%, most preferably from 2% to 9%, of the total one or more structuring agents and non-ionic hydrophilic surfactant by weight of the respective composition.
  • each composition comprises no more than 10 weight percent, and more preferably no more than 5 weight percent, of a hydrophobic, structuring agent selected from the group consisting of saturated 06 to C30 fatty alcohols, saturated 06 to C3Q fatty alcohols containing from about 1 to about 5 moles of ethylene oxide, saturated 06 to C30diols, saturated 06 to C30 monoglycerol ethers, saturated 06 to C30 hydroxy fatty acids, and mixtures thereof, having a melting point of at least about 40 deg.
  • a hydrophobic, structuring agent selected from the group consisting of saturated 06 to C30 fatty alcohols, saturated 06 to C3Q fatty alcohols containing from about 1 to about 5 moles of ethylene oxide, saturated 06 to C30diols, saturated 06 to C30 monoglycerol ethers, saturated 06 to C30 hydroxy fatty acids, and mixtures thereof, having a melting point of at least about 40 deg.
  • each composition comprises at least 0.5 weight percent, more preferably at least 1 weight percent, even more preferably at least 2 weight percent, and still more preferably at least 3 weight percent, of a hydrophobic, structuring agent selected from the group consisting of saturated 06 to C.30 fatty alcohols, saturated 06 to C30 fatty alcohols containing from about 1 to about 5 moles of ethylene oxide, saturated 06 to C30diols, saturated 06 to C30 monoglycerol ethers, saturated 06 to C30 hydroxy fatty acids, and mixtures thereof, having a melting point of at least about 40 deg. C.
  • a hydrophobic, structuring agent selected from the group consisting of saturated 06 to C.30 fatty alcohols, saturated 06 to C30 fatty alcohols containing from about 1 to about 5 moles of ethylene oxide, saturated 06 to C30diols, saturated 06 to C30 monoglycerol ethers, saturated 06 to C30 hydroxy fatty acids, and mixtures thereof, having a melting point of at least about 40 deg
  • these structuring agents are useful to assist in the formation of the rheological characteristic of the composition which contribute to the hydrolytic stability of the composition of the present invention.
  • structuring agents assist in the formation of the liquid crystalline gel network structures.
  • the preferred structuring agents of the present invention are selected from the group consisting of stearyl alcohol, cetyl alcohol, behenyl alcohol, stearic acid, palmitic acid, the polyethylene glycol ether of stearyl alcohol having an average of 1 to 5 ethylene oxide units, the polyethylene glycol ether of cetyl alcohol having an average of 1 to 5 ethylene oxide units, and mixtures thereof. More preferred structuring agents of the present invention are selected from the group consisting of stearyl alcohol, cetyl alcohol, behenyl alcohol, the polyethylene glycol ether of stearyl alcohol having an average of about 2 ethylene oxide units (steareth-2), the polyethylene glycol ether of cetyl alcohol having an average of about 2 ethylene oxide units, and mixtures thereof. Even more preferred structuring agents are selected from the group consisting of stearyl alcohol, cetyl alcohol, behenyl alcohol, steareth-2, and mixtures thereof.
  • the hydrophilic surfactant is described.
  • the compositions of the present invention comprise no more than 2% weight percent, preferably no more than 1% weight percent, and more preferably no more than 0.5% of at least one hydrophilic surfactant.
  • the hydrophilic surfactant disperses the hydrophobic materials, i.e. the structuring agent, in the water phase.
  • the surfactant at a minimum, must be hydrophilic enough to disperse in water.
  • the exact surfactant chosen will depend upon the pH of the composition and the other components present.
  • Preferred for use herein are nonionic surfactants.
  • the nonionic surfactants that are useful herein are those that can be broadly defined as condensation products of long chain alcohols, e.g.
  • C8-30 alcohols with sugar or starch polymers, i.e., glycosides.
  • these surfactants include decyl polyglucoside (available as APG 325 CS from Henkel) and lauryl polyglucoside (available as APG 600 CS and 625 CS from Henkel).
  • Other useful non-ionic surfactants may include the condensation products of sorbitol with a fatty acid. Nonlimiting examples include the Tweens, Spans, and the Po!ysorbates.
  • Other useful nonionic surfactants may include: condensation products of alkylene oxides with fatty acids (i.e. alkylene oxide esters of fatty acids); condensation products of alkylene oxides with 2 moles of fatty acids (i.e.
  • alkylene oxide diesters of fatty acids condensation products of alkylene oxides with fatty alcohols (i.e. alkylene oxide ethers of fatty alcohols): condensation products of alkylene oxides with both fatty acids and fatty alcohols, i.e. wherein the polyalkylene oxide portion is esterified on one end with a fatty acid and etherified (connected via an ether linkage) on the other end with a fatty alcohol; and polyhydroxy fatty acid amide surfactants.
  • Non-limiting examples of other nonionic surfactants may include steareth-21, ceteareth-20, ceteareth-12, Tween-60, Tween- 80, sucrose coeoate, steareth-100, PEG-100 stearate, PEG-1000 stearate, and mixtures thereof.
  • the first composition and the second composition each independently comprise a structuring agent, gel net-work, and combinations thereof; preferably a structuring agent; more preferably the first and second compositions each comprise a structuring agent.
  • the structuring agent is selected from an alkyl hydroxyalkyl cellulose ether, cross linked polyacrylate, cross linked polymer comprising an acryloyldimethyltaurate as a monomer, and combinations thereof.
  • the first and second compositions provide respective first and second portions that are visually distinctive from each other.
  • the use of colorants and opacifiers are described to provide this effect.
  • at least the first composition comprises such colorants or opacifiers (wherein more preferably the second composition is at least partially transparent, even more preferably transparent).
  • the second composition is free of colorants and opacifiers.
  • the color and opacity may be provided by one or more opacifying particulate materials and/or one or more colorants.
  • exemplary opacifying particulate materials include titanium dioxide, zinc oxide, zirconium dioxide, and the like. Titanium dioxide is a particularly suitable opacifying particulate material.
  • suitable colorants include, but are not limited to organic and/or inorganic pigments, micas, pearlescent agents interference pigments, natural and/or synthetic dyes (including, for example, water-soluble, non-soluble, oil-soluble), carmines, natural colorants, lakes, including FD&C and/or D&C lakes and blends, and combination of any of the foregoing.
  • suitable colorants include iron oxides, ferric ammonium ferrocyanide, manganese violet, ultramarine blue, and chromium oxide, phthalocyanine blue and green pigment, encapsulated dyes, and mixtures thereof.
  • Preferred dyes include Red No. 40 and 33, and Yellow No. 5. The presence of Mica is also preferred.
  • the discrete dispensed product is a dispensed skin care product.
  • the first or second composition herein may comprise one or more of the following ingredients from these functional classes including: abrasives, absorbents, fragrances, anti-acne agents, anti-caking agents, antifoaming agents, antimicrobial agents, antifungal agents, antioxidants, binders, buffering agents, bulking agents, chelating agents, colorants, cosmetic astringents, cosmetic biocides, denaturants, drug astringents, external analgesics, film formers, opacifying agents, pH adjusters, plant derivatives, plant extracts, plant tissue extracts, plant seed extracts, plant oils, botanicals, botanical extracts, preservatives, propellants, reducing agents, sebum control agents, sequestrants, skin bleaching agents, skin-conditioning agents (e.g.
  • humectants and occlusive agents include Vitamine B3 compounds (e.g., niacinamide) and galactomyces ferment filtrate (INCI: Galactomyces Ferment Filtrate; e.g., PITERA (Registered trademark). SK-11 Pitera available from Kashiwayama. Skin care active are described in US 2016/0374933 Al, paragraphs 81-104.
  • each composition may independently comprise from 0.0001%, 0.001%, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 2%, 3%, 5%, 50%, 80%, 95% to 50%, 25%, 20%, 10%, 7%, 5%, 4%, or 2%, by weight of the respective composition, of one or more ingredients.
  • Examples may include separating incompatible ingredients into the respective first and second composition to help with stability but are combined, when dosed, to provide benefits.
  • these reactions may include separating reactants involved in Maillard reactions, reduction-oxidation reactions, undesired viscosity modification from salt and polymer reactions, catalysis, pH dependent actives, endothermic reactions, exothermic reactions, hydrophilic vs. hydrophilic phases interactions, color shifts, and the like.
  • a preferred example of separating incompatible ingredients includes separating certain vitamins and pro-vitamins (e.g., niacinamide) from lower pH conditions to help stop degradation.
  • one composition comprises the vitamin/pro-vitamin under relatively neutral pH while the other composition is a relatively lower pH.
  • the vitamin/pro-vitamin are able to interact with the lower pH composition.
  • niacinamide niacinamide
  • one composition is at or below pH 5, while the other composition is above pH 5; preferably the one composition has a pH from 2.5 to 5, or 3 to 4, while the other composition has a pH from above 5 to 8, or from 5.5 to 7.
  • the difference between the pH of the two compositions is at least a 1 pH value, or at least a 2 pH value, or at least a 3 pH value.
  • the discrete dispensed product comprises either: (i) the first portion comprises a vitamin or pro-vitamin, and the second portion comprises a pH lower than the first composition; or (ii) the second portion comprises a vitamin or pro-vitamin, and the first portion comprises a pH lower than the second portion.
  • the vitamin or pro-vitamin comprises a niacinamide.
  • the first or second portion comprising the vitamin or pro- vitamin comprises a pH above 5, preferably above 5 to 8.
  • the second or first portion comprising a pH lower than first and second portion respectively comprises a pH at or below pH 5, preferably from 2.5 to 5.
  • suitable pH modifiers may be used for achieving the desired pH of the first and second composition.
  • acidic pH modifiers such as hydroxy acid, citric acid, lactic acid, malic acid, beta hydro acid, salicylic acid, lactobionic acids, gluconic acids, acetyl and inorganic acids.
  • Preferred acidic pH modifiers may include lactic acid, gluconic acid, or combination thereof.
  • basic pH modifiers like TEA (trimethylamine), NaOH, or combination thereof.
  • DDPFTM Discrete Dispensed Product Flowability Test Method
  • this speed for either of the second product or the first product is from 0 cm/minute to 4 cm/minute, preferably from 0 to 3 cm/minute, more preferably from 0 to 2.25 cm/minute, even more preferably from 0 to 1 cm/minute (cm/min).
  • Non-limiting examples of the speed are 0.5, 0.8, 1, 1.5, 2, or 2.25 cm/min.
  • the speed ratio between the second portion and the first portion is from 4:1 to 1:4, preferably from 3:1 to 1:3, more preferably from 2: 1: to 1:2.
  • this speed ratio include: 3:1, 2: 1, 1:1, or 2:1
  • Each portion (first portion or second portion), of the discrete dispensed product comprises a Crossover Stress assessed by a Portion Oscillatory Rheometry Test Method (“PORTM”) as described in the Examples section below.
  • the second portion comprises a Crossover Stress which is equal to or greater than 10 Pascals (Pa), preferably from 10 Pa to 120 Pa, more preferably from 10 to 80 Pa, even more preferably from 15 to 50 Pa.
  • Non limiting examples of the Crossover Stress of the second portion is from 15, 25, or 40 Pa.
  • the first portion comprises a Crossover Stress, assessed by PORTM, equal to or greater than 5 Pa, preferably from 5 to 120 Pa, more preferably from 5 to 80 Pa, even more preferably from 10 to 50 Pa.
  • Non-limiting examples of the Crossover Stress of the first portion is from 15, 25, or 40 Pa.
  • One advantage of a second portion having such a Crossover Stress is that the discrete dispensed product substantially retains its dispensed shape after being dispensed.
  • Another advantage of a second portion having such a Crossover Stress is that the first portion remains distinct within the dispensed product.
  • One advantage of a first portion having such a Crossover Stress is that the discrete dispensed product substantially retains its dispensed shape after being dispensed.
  • the Crossover Stress ratio between the second portion and the first portion is from 4:1 to 1:4, preferably from 3:1 to 1:3, more preferably from 2:1 to 1:2.
  • Non- limiting examples of this Crossover Stress ratio include: 1:3, 1:2, 1:1, or 2:1.
  • Each portion, of the discrete dispensed product comprises an Opacity Percentage assessed by a Portion Opacity Test Method (“POTM”) as described in the Examples section below.
  • POTM Portion Opacity Test Method
  • the first portion comprises an Opacity Percentage from 100% to 0%, preferably from 90% to 0%, more preferably 60% to 0%.
  • Non-limiting examples of this Opacity Percentage of the first portion is 50%, 60%, 70%, or 80%.
  • the second portion comprises an Opacity Percentage, assessed by POTM, from 0 % to 90%, preferably from 0% to 80%, more preferably from 0% to 60%, yet more preferably from 0% to 10%.
  • Non-limiting examples of this Opacity Percentage of the second portion is 5%, 10%, 15%, 20%, 25%.
  • One advantage of the Opacity Percentage values described is that the first portion remains visually distinct from a partially transparent second portion. Thus, providing further distinct and premium dispensed product appearance.
  • the first portion has a higher Opacity Percentage than the second portion wherein, the difference between the first and second portions is 15% to 100%, preferably from 25% to 100%, more preferably from 50% to 100%.
  • this Opacity Percentage difference between the first and second portion is 40%, 50%, 60%, 70%, 80%, or 90%.
  • One advantage of a high Opacity Percentage difference between the first and second portions is that the portions remain distinct even without large Delta E* between the portions.
  • the first portion and the second portion, of the discrete dispensed product comprises a Delta E* value assessed by a Portion Delta E* Test Method (“PDETM”) as described in the Examples section below.
  • PDETM Portion Delta E* Test Method
  • this Delta E* value is greater than 5, preferably greater than 35, more preferably from 35 to 200, even more preferably 35 to 150, even further preferably 50 to 120.
  • Non-limiting examples of this Delta E* value is 30, 50, 60, 70, 80, 90, 100, 110.
  • One advantage of the Delta E* values described is in providing enhanced noticeability between the first portion and second portion.
  • the second portion of dispensed product is at least partially transparent, preferably transparent.
  • “transparent” means having the property of transmitting light without appreciable scattering so that bodies lying beyond are seen clearly.
  • the first portion is not transparent, preferably the first portion is opaque, more preferably opaque and having a colorant.
  • the colorant is selected from red, yellow, orange, pink, or combinations thereof.
  • One advantage of this example is it resembles premium Japanese Ikura to some consumers.
  • dispensing systems preferably dual dispensing systems, compatible with this invention include (but are not limited to) dual chamber tubes or bottles or airless chambers having a collapsible reservoir using a collapsible wall (either a delaminating bottle or a piston) or chambers using a dip tube to draw products or a combination thereof.
  • the dispenser (31) comprising a first reservoir (37) and a second reservoir (39).
  • the first reservoir (37) contains a first composition (not shown)
  • the second reservoir (39) contains a second composition (not shown).
  • the first and the second composition is at least partially transparent, more preferably transparent.
  • the first reservoir is in fluid communication with a first fluid channel comprising a first outlet orifice
  • the second reservoir is in fluid communication with a second fluid channel comprising a second outlet orifice.
  • the second outlet orifice at least partially surrounds a perimeter of the first outlet orifice.
  • the first and second outlet orifices are positioned in a nozzle (41).
  • the dispenser (31) is configured to dispense a discrete dispensed product via the nozzle (41).
  • Cross sectional views of different nozzles are provided in Figures 5A - 5D (discussed in further detail below).
  • Dispensing the first composition provides the first portion and dispensing the second composition provides the second portion. These compositions are dispensed from the dispenser concurrently, or substantially concurrently, to provide the discrete dispensed product.
  • the dispenser may have a first pump associated with the first reservoir and a second pump associated with the second reservoir. Both pumps are preferably actuatable together by means of a single pushbutton. Referring to Figure 4, an example of this pushbutton (35) is shown at the top of the dispenser (31). The pushbutton operatively connects to the actuation rods. Total volumes/masses that the dispenser is capable of dispensing in one actuating hand movement may include those as previously described for the discrete dispensed product.
  • the pumps may be configured to dispense different volumes of the respective first and second compositions when actuated to the end-of- stroke, by having different start/finish times, flow rates, or displacement, relative to each other. Nevertheless, preferably the actuating forces of the two actuating rods are substantially or completely identical.
  • WO 2017/042492 Al describes a dual dispenser characterized in that the first and second pumps comprise respective actuation rods which are axially movable with strokes of different lengths, i.e. a first actuation rod with a long stroke and a second actuation rod with a short stroke. As such, the different amounts of the respective compositions are dispensed.
  • the first pump is a dip-tube type pump and second pump is an airless type pump.
  • both the first and second pump are either dip- tube type or airless type pump.
  • the first pump is an airless type pump and the second pump is a dip-tube type pump.
  • the pumps are actuatable by pushbutton providing the energy required for expelling the first and second compositions from the respective reservoirs. That is, the dual dispenser is hand driven. The user should be encouraged to dispense the pump with a full stroke for best results. This may be achieved by means of usage instructions, using feedback mechanism (such as visual, sound, tactile) as well as keeping the force to actuate sufficiently low.
  • the peak force to actuate the pump(s) should be below 45N, more preferably below 35N and even more preferably below 25N; alternatively, from 45N to 10N.
  • Non-limiting example of the peak force include 15N, 17N, 20N, 23N, 25N, or 27N.
  • the outlet channels are positioned together in a single nozzle. The nozzle is the exterior portion of the converged outlet channels. It is highly preferred that the first and second composition only come in contact until after exiting each other’ s respective first and second outlet orifices. Accordingly, it is preferred that the first outlet orifice and the second outlet orifice are co-planar. This helps to minimize risk of pre-mature cross-contamination of the first and second composition during dosing.
  • FIG. 5A-5D cross sectional view of various nozzles (41, 141, 241, 341 , respectively).
  • a first outlet orifice of the Fig. 5A-5D (43, 143, 243, 343, respectively) is centrally located.
  • a second outlet orifice of Fig. 5A-5D (44, 144, 244, 344, respectively) at least partially surrounds a perimeter of the first outlet orifice.
  • the second outlet orifice completely surrounds the perimeter of the first outlet orifice, i.e., the second outlet orifice concentrically surrounds the first outlet orifice.
  • the second outlet orifice does not completely surround the first outlet.
  • Figure 6 is the same cross section view of nozzle of Figure 5B but indicates angle Theta (57) to describe the percentage that the second outlet orifice (54) surrounds the perimeter of the first outlet orifice (53).
  • a central axis (56) intersect the centroid of the first outlet orifice and is perpendicular to the cross-sectional plane. Angle Theta is measured around the central axis (56).
  • the second outlet orifice (54) surrounds 88% of the perimeter of the first outlet orifice (53)
  • the second outlet orifice (244) surrounds 50% of the perimeter of the first outlet orifice (243).
  • the second outlet orifice at least partially surrounds 25%, preferably at least 40% of a perimeter of the first outlet orifice.
  • this percentage may include: 10%, 25%, 40%, 60%, 80%, or 90%.
  • Fig. 5D is cross sectional view of a nozzle (341) that is analogous to Fig. 5A except for the presence of septa (345, 347A, 347B).
  • An outer top septum (347 A) and an outer bottom septum (347B) divides the second outlet orifice into equally dimensioned left second outlet orifice (344A) and right second outlet orifice (344B).
  • the left and right second outlet orifices together (344A, 344B) completely surrounds (save for the presence of the septa (347)) a perimeter of the first outlet orifice (343A, 343B).
  • the first outlet orifice is also divided by an inner septum (345) into equally dimensioned left first outlet orifice (343A) and a right first outlet orifice (343B).
  • the septum may provide advantages including: greater stability into the first outlet orifice, particularly when dispensing larger volumes of di spensed product; or providing unique structure/shape to the discrete dispensed product.
  • a septum divides: the first outlet orifice; or at least partially the second outlet orifice; or both first outlet orifice and at least partially the second outlet orifice.
  • Varying the cross sectional area of the inner first orifice(s) and the surrounding second orifice(s) may influence the level of post-dispense drooling and the force to actuate. If the cross- sectional area of one channel becomes too low, the force to actuate may increase excessively. Conversely if the cross sectional area is too large, the product appearance may start to be less consistent as well as the user may experience a significant amount of post dispense drooling. Controlling for other variables of dispensing (using, for example, the controlled dosing method describe in the Examples section, the total cross section area of the inner orifice(s) is from 1 mm 2 to 5 mm 2 , or from 2 - 3 5 mm 2 .
  • the total cross section area of the outer surrounding orifices(s) is from 10 nun 2 to 50 mm 2 , or from 20 mm 2 to 40 mm 2 or from 25 mm 2 to 37 mm 2 , or from 29 nun 2 to 35 mm 2 in one example, reference figure 5A, the total cross section area of the inner office (43) is 2.78 mm 2 and the outer surrounding orifice (44) is 31.72 2 .
  • each outlet orifice has a similar cross section when: the first and second composition to be dispensed have comparable flow viscosities; the dispensing fluid channels provide similar resistance; and the dispenser acts on valves of similar stroke/ dosage.
  • the first and second composition to be dispensed have comparable flow viscosities; the dispensing fluid channels provide similar resistance; and the dispenser acts on valves of similar stroke/ dosage.
  • the ratio between a cross sectional area of the first outlet orifice and a cross sectional area of the second outlet orifice is from 1:5 to 1:20, preferably from 1 : 8 to 1 : 15 , more preferably 1 : 9 to 1 : 13.
  • the dual dispenser is a skin care dual dispenser.
  • Figures 7A - 7E is Table 1 of a formulation and data for comparative example II.
  • Figures 8A - 8E is Table 2 of a formulation and data for inventive examples II and II.
  • Figures 9A - 9E is Table 3 of a formulation and data for inventive examples IV and V. All portions ingredients are mixed together until homogeneous and uniform (no visible lumps) composition is obtained. In those first or second portions containing Acrylates/Cl0-30 alkyl acrylate crosspolymer, neutralization with Aminomethyl Propanol is carried out followed by addition of all other ingredients while mixing until a homogeneous and uniform composition is obtained. All measurements are done on 0.30 g of discrete dispensed product weighed by Mettler Toledo New Classic MF (Model: MS4002S/01). Measurements are done in triplicate and the arithmetic mean is reported.
  • FIG. 10A is a top view, schematic representation, of the dispensed product (61) of inventive Example A.
  • the second portion (63) surrounds the first portion (65).
  • a cross sectional view of the nozzle used to dispense inventive Example A is previously described at Fig. 5A.
  • Neomix package with concentric nozzle design available from Aptar supplier is used, which dispenses a total volume of 0.3ml ( ⁇ 0.3gram) in a volume ratio between the first portion and the second portion of 1:3 (i.e. 1 part of the first portion and 3 parts of the second portion).
  • the second portion fully surrounds the first portion.
  • Figure 10B is a top view, schematic representation, of the dispensed product (66) of comparative Example B. The second portion (67) is abutting the first portion (69).
  • Figure 11 is also a top view, schematic representation of the dispensed product (166) of comparative Example
  • a“side-by-side” nozzle (71) is used to dispense the dispensed product of comparative Example B.
  • the nozzle (71) has a first fluid channel (77) having a first outlet orifice (79) and a second fluid channel (73) having a second outlet orifice (75).
  • the first and second fluid channels (73, 77) are side-by-side to each other.
  • a dual chamber side-by-side dispensing package available from Yonwoo (South Korea) supplier is used, which dispenses a total volume of 0.3ml ( ⁇ 0.3gram) of discrete dispensed product in a volume ratio between the first portion and the second portion of 1 : 1.
  • the formulations of the first and second portions of the respective dispensed products are the same.
  • the formulation and data for Comparative Example B is provided in as Comparative Example I in Table 1, Figures 7 A to 7E.
  • the formulation and data for Inventive Example A is provided as Example II in Table 2, Figures 8A to 8E.
  • Table 4 Consumer preference of 30 panelists of inventive example A v. comparative example B.
  • the consumer panels viewed the inventive example A as both more premium and distinctive relative to the comparative example B.
  • FIG. 13A illustrates a discrete dispensed product (81) wherein the second portion (83) completely surrounds the first portion (85).
  • Figure 13B is illustrates a discrete dispensed product (181) wherein the second portion (183) does not completely surround the first portion (185) (but rather at least partially). This method assesses the percentage by which the second portion surrounds the maximum perimeter of the first portion.
  • the subject dispensed product is dispensed on a flat Leneta Card as the planar target surface.
  • a color digital image is immediately taken (preferably within 5 seconds), wherein the camera lens of camera is positioned orthogonally 20 to 30 cm away from the Leneta Card.
  • a threshold-based on color difference is established, and the image is partitioned into regions corresponding to the first portion (or other portions, if there are more than one portions at least partially surrounded by the second portion) and dispensed product as a whole. The percentage of the second portion surrounding the maximum perimeter of the first portion is then determined.
  • the dispensed product is dispensed from its dispenser, wherein the nozzle of the dispenser is directed perpendicular and remains stationary during dispensing, to the Leneta Card.
  • a standardized dispenser (“electronic syringe pump” as described below) is used. Variability from nozzle movement, nozzle angle, and dispensing flow rate are standardized in the samples assessed.
  • Inventive Formulation Example V (provided in Table 3, Figures 9A - 9E) is assessed with two nozzles having different configurations represented by Figure 5 A and 5B.
  • the first portion is described as the first composition of Example V and the second portion is described as the second composition of Example V.
  • a first syringe contains the first composition and a second syringe contains the second composition.
  • the syringes are fluidly connected to a nozzle via flexible tubes.
  • the nozzle used for dispensing the dispensed product of Figure 13A is pictorially represented in Figure 5A where the first portion dispensing cross sectional area (i.e., first outlet orifice) is 3mm 2 and the second portion dispensing cross section area (i.e., second outlet orifice) is 32mm 2 .
  • the nozzle used for dispensing the dispensed product of Figure 13B is pictorially represented in Figure 5B where the first portion dispensing cross sectional area (i.e., first outlet orifice) is 3mm 2 and the second portion dispensing cross sectional area (i.e., second outlet orifice) is 24mm 2 .
  • the nozzle is placed 2 mm away from the Leneta Card, wherein a central axis of the nozzle is perpendicular relative to the Leneta Card.
  • the speed and amount of the first and second compositions dispensed is controlled by an electronic syringe pump (Fusion 200 Syringe Pump from Chemyx Inc. or equivalent) and syringes (First Portion Syringe: Terumo 5ml with Diameter of 13 mm; and Second Portion Syringe: Terumo 30ml with Diameter of 23.1 mm).
  • the syringe pump is adjusted to dispense a total of 0.3ml of discrete dispensed product (combined volume of first and second portion) at a standard dispensing speed of 15 ml/min for the second portion syringe Terumo 30ml. Syringes of varying sizes can be appropriately used to get the desired volume and ratio of the discrete dispensed product. The discrete dispensed product is then imaged.
  • the imaging system includes a light booth with black opaque background on all surrounding four sides.
  • the light booth is illuminated with two LED spotlights (e.g., Solax-iO LED artificial solar light source having a diameter of 8 cm, model LE-9ND65 with Polarizer film 100 mm SQ TS #86187 from Edmund Optics).
  • the spotlights are on opposing sides of the dispensed product at 45 degrees.
  • the distance of the spotlight to the discrete dispensed product is 18 cm.
  • a digital color camera (Camera info: Canon EOS 600D, lens: Canon lens EF 35mm 1:2 IS USM with Vitacon professional PL 67mm polarized light filter) is overhead, wherein the camera lens is positioned centered and overhead of the discrete dispensed product.
  • the minimum area of the discrete dispensed product in the captured image is 4000 pixels. Polarizers on both camera lens and spotlights are adjusted to reduce specular reflections.
  • a 24 standard color checker chart for color calibration is used (e.g.,“Color Checker Passport” chart from X-rite Corporation Inc, Grand Rapids, MI, USA, or equivalent).
  • the Leneta Card and color checker chart are arranged so as to be in the same field of view.
  • the camera exposure is set such that a histogram of the digital image shows the image intensities to be within the upper half of the dynamic range of the digital image without reaching the upper limit. This ensures that there is no saturation (i.e., clipping) and the image is well exposed (but not overexposed).
  • the discrete dispensed product is dispensed onto the Leneta Card at the predetermined location.
  • the image is taken within 3 seconds after dispensing.
  • a schematic, top view, representation of images of discrete dispensed products are provided in Figure 13A and 13B.
  • the second portion is transparent while the first portion is with a color.
  • the first discrete dispensed product includes an orange dye, which can be clearly seen through the transparent second portion, the dispensed product appears as an orange color core (the first portion) enveloped in a transparent shell (the second portion) to a naked eye which gives an image of a beautiful and premium looking discrete dispensed product.
  • the resulting image is subject to image analysis to ultimately determine the percentage by which the second portion surrounds a maximum perimeter of the first portion.
  • a background is captured.
  • a photo is taken of a white sheet of paper that fills the field of view. For purposes of clarification, this does not include the Leneta card or the Color Checker Chart. Noise from the image is removed and the resulting image is converted to a “percentage image” wherein each pixel represents the percentage of maximum intensity in the image.
  • A“flat field” background corrected image is created by taking the image of the dispensed product with color checker chart next to it and dividing this image by the“percentage image.”
  • the background corrected image is convered to a calibrated CIELAB color space image.
  • the RGB values of each chip are measured in the Color Checker Chart.
  • a transform is developed that converts camera RGB values into calibrated tristimulus XYZ values.
  • the transform is then applied to every pixel in the background corrected image to produce a calibrated XYZ image.
  • the XYZ image is converted into a calibrated CIELAB color space image by using analytical CIE formulas, for the D65 illuminate, 10 degree observer per ASTM Standard E308-01.
  • "LAB” and“XYZ” refers to the commonly recognized color space specified by the International Commission on Illumination ("CIE").
  • the Delta E image is computed.
  • the color of the white Leneta Card is defined as the reference color.
  • the color difference is calculated, compared to the reference color, using CIE Delta E 2000 formula (ASTM Standard No. D2244-16) for each pixel, to convert the calibrated CIELAB color space image into a color difference image.
  • the second portion is at least partially transparent or transparent; and the first portion non-transparent, preferably opaque, more preferably opaque and with a color.
  • the second portion is slightly darker than the white Leneta card and thus may have some amount of color.
  • the second portion may have a Delta E in the 5-20 range (as compared to the reference color).
  • the first portion typically has a much different color than the white Leneta card and the second portion. That is to say, the Delta E of the first portion is usually designed to be higher than the Delta E of the second portion, e.g., more than 10.
  • the portion of the image corresponding to the entire discrete dispensed product is isolated from the remainder of the calibrated Delta E image (corresponding, for example, to the white Leneta card substrate background and color checker) such that the only image content remaining corresponds to the dispensed product, i.e., a“dispensed product mask” image.
  • a“dispensed product mask” image If the analysis is performed using a digital image analysis software package, this may be performed, for example, through the use of an appropriate threshold to define a dispensed product mask or by manually constructing a dispensed product mask, that once applied, only the area of the corresponding to the dispensed product remains and all other pixels have no value.
  • a“halo effect” is created around the dispensed product.
  • This halo effect is an optical effect where light reflecting/refracting from the first portion interacts inside of the second portion before escaping to produce the optical effect next to the perimeter of the dispensed product.
  • uniformly reduce such as through pixelwise image“erosion” the outer dispensed product mask just enough to remove any halo effect artifacts in the image, but such erosion should not diminish the dispensed product area by more than 8%, perferrably no more than 5% of the dispensed product area.
  • a first portion mask image is generated.
  • the Delta E value of each pixel in the dispensed product mask is extracted (as in step 3 above).
  • the delta E threshold is used to define the first portion mask. If halo effect is observed and dispensed product mask is eroded, this eroded dispensed product mask is used for first portion mask generation.
  • perimeter masks of the respective inner first portion mask and the dispensed product mask are created. These masks are only of the outer perimeter, preferably only a single pixel wide.
  • the lengths of the: perimeter of the dispensed product; perimeter of the first portion; and the overlapping perimeter (if any), are computed from the perimeter masks.
  • the length of the first portion perimeter is measured from the first portion perimeter mask.
  • the length of the dispensed product perimeter is measured from the dispensed product perimeter mask. That portion, if any, of first portion surrounded by second portion is identified and measured to provide an“overlapping perimeter length” (L) - schematically represented in Fig. 11 and referenced as 168.
  • L “overlapping perimeter length”
  • “maximum perimeter of the first portion” are used interchangeably.
  • FIG. 14 pictorially represents a top view of a discrete dispensed product (91) in which a first portion (95) is partially surrounded by a second portion (93).
  • a first portion perimeter (97) is the length of the entire perimeter of the first portion (95), which is referred to as P for computing Percentage Surrounding.
  • a discrete dispensed product perimeter (92) is the length of the entire perimeter of the dispensed product (91).
  • the overlapping perimeter length (98) is that length of the first portion perimeter (97) that is surrounded by the second portion (93), which is referred to as L for computing Percentage Surrounding.
  • the Otsu thresholding in the fifth step above utilizes a chroma thresholding to determine the first portion mask image.
  • the first portion perimeter as well as the overlapping perimeter length of the respective dispensed product are identifed by the above method.
  • the electronic syringe pump as described above was used to dispense the discrete dispensed product pictorally represented in Figure 13A and 13B.
  • the first portion perimeter of the discrete dispensed product of figure 13A is l.94cm and the overlapping perimeter length is also l.94cm.
  • the second portion completely (i.e., 100%) surrounds the first portion in the discrete dispensed product represented in Figure 13A.
  • the first portion perimeter is l.99cm and overlapping perimeter length is Ll7cm.
  • the second portion surrounds 59% of the maximum perimeter of the first portion [(1.17 ⁇ 1.99)* 100].
  • the discrete dispensed product of Figure 13A is used in the above method.
  • background corrected image is obtained, which is calibrated to CIELAB color space image in the second step.
  • delta E image is calculated.
  • the Dispensed product mask image (generated in step four with erosion to counter for halo effects) and the first portion mask image (generated in the fifth step) are used in the sixth step to create dispensed product perimeter mask and first portion perimeter mask respectively.
  • the perimeter masks created in the sixth step are used to identify the length of discrete dispensed product perimeter (which is 5.72cm), length of the first portion perimeter (which is l.94cm) and the overlapping perimeter length (which is computed to be l.94cm). From the above data, divide the overlapping perimeter length (L) with the first portion perimeter (P) and multiply by 100 [(1.94 ⁇ 1.94)* 100] to get the percentage by which the second portion surrounds the maximum perimeter of the first portion.
  • the length of abutment (168) is the overlapping perimeter length (L) or the maximum perimeter of the first portion. This length of abument, which is used computing the percentage by which the second portion (167), surrounds the maximum perimeter of the first portion (169) that is determined to be 25.6% (also indicated in data section of Comparative Example I in Table 1, Figure 7E).
  • Length Height Ratio The length and height of a discrete dispensed product is measured and ratios thereof described.
  • the dispensed product is dispensed, wherein the nozzle of the dispenser is directed perpendicularly and remains stationary during dispensing, on a flat and horizontal Leneta Card and, within 3 seconds, is imaged from the side from which dimensions are obtained.
  • the dispensing nozzle is placed 2 mm away from the Leneta Card during dispensing.
  • the camera is positioned such that the projection distance of the dispensed product away from the Leneta Card surface is maximized.
  • the card is rotated such that the projection length of the planar contact surface of the dispensed product is maximized.
  • the camera and camera lens (Camera info: Canon EOS 600D, lens: Canon lens EF 35mm 1:2 IS USM) are positioned so that it is perpendicular to the length and in the same planar contact surface of the dispensed product.
  • a lighting source located above the dispensed product illuminates the dispensed product to provide sufficient contrast between the dispensed product and the background.
  • the captured image should have a spatial resolution of no fewer than 350 pixels/cm.
  • the image is preferably captured along with a ruler or spatial calibration target located at the same focal distance as the dispensed product.
  • An image of the dispensed product is captured using the imaging setup described.
  • the maximum length of the dispensed product is assessed at its planar contact surface, i.e., where the dispensed product meets the Leneta card, is measured as the length (L), and is recorded in cm and reported to the nearest hundredth.
  • the maximum projection distance of the dispensed product orthogonally away from the plane of the Leneta card is measured as the height (H) of the dispensed product, and is recorded in cm and reported to the nearest hundredth.
  • the dimensionless quotient L/H is calculated and reported to the nearest hundredth.
  • DDPFTM Discrete Dispensed Product Flowability Test Method
  • the dispensing syringe is placed 2 mm away from the Leneta Card during dispensing and remains stationary during dispensing. Immediately thereafter (within 3 seconds), the Leneta Card is tilted (within 0.5 seconds) at 45 degrees on a tilt table. The distance traversed by the leading edge of the droplet during 1 minute is measured to the nearest 0.5 mm. The flowability is defined as the speed with units cm/minute and is reported to the nearest hundredth. If the droplet reaches the edge of the Leneta card in less than 1 min, then record the time that the leading edge of the droplet takes to move 10 cm on the Leneta Card to calculate the speed.
  • the Portion Oscillatory Rheometry Test Method (“PORTM”) is used to determine “Crossover Stress,” reported in units of Pa, of a portion (e.g., the first or second portion of a discrete dispensed product) as described herein.
  • a controlled- strain rotational rheometer (such as Discovery HR-2, TA Instruments, New Castle, DE, USA, or equivalent) capable of portion sample temperature control (using a Peltier cooler and resistance heater combination) is used for this test. Before the test, each portion sample is stored in a separated container and placed in a temperature controlled lab (23+ 2 °C) overnight. During the test, the lab temperature is controlled at 23 + 2°C.
  • the rheometer is operated in a parallel plate configuration with 40-mm crosshatch stainless steel parallel-plate tooling.
  • the rheometer is set at 25 °C.
  • Approximately 2 ml of the portion sample is gently loaded onto peltier plate using a spatula from the sample container to prevent a change in the portion sample structure, and any excess protruding sample is trimmed once the gap reaches lOOOpm after sample loading.
  • the portion sample is then equilibrated at 25 °C for at least 120 seconds before measurement starts. In case a different rheometer is used, extend the equilibrium time appropriately to ensure the portion sample temperature achieves 25 °C before the test.
  • the test commences with rheometer increased from strain amplitude 0.1% to 1000% in logarithmic mode with oscillation frequency fixed at 1 Hz (that is, one cycle per second) at 25 °C.
  • the resulting time-dependent stress is analyzed according to the customary logarithmic oscillatory strain formalism, known to those of skill in the art, to obtain the storage modulus (G') and loss modulus (G") at each step.
  • G' and G" both expressed in units of Pascals, vertical axis
  • the Portion Opacity Test Method (“POTM”) is used to determine the opacity of a first portion or second portion (of the discrete dispensed product). Results are reported as a percentage, wherein higher the percentage the greater is the opacity of the sample. Generally, the opacity is the quality of a material that does not allow light to pass through. Higher percentage values mean greater hiding power and thus less transparency.
  • a spectrophotometer that can deliver tri stimulus values CIE XYZ under CIE D65 lighting conditions across the visible spectrum (such as Spectrophotometer CM-3600A, Konica Minolta, Japan, or equivalent) is used for this method.
  • the spectrophotometer is operated under conditions to deliver 1931 CIE defined tristimulus XYZ values with 2° observer and D65 illuminant. Portion samples are evaluated using a 10 mm path length in a plastic cell (such as CM-A131, Konica Minolta, Japan or equivalent), reflectance measurement, a 25.4mm aperture opening at the specimen surface, specular component excluded. Two sets of tristimulus values are necessary to calculate opacity - one with the product’s lOmm sample cell in front of a white background and the other in front of a black background.
  • Acceptable white backgrounds include the white portion of an opacity card (such as Opacity Card Form 2 A, Leneta Company, Inc, Mahwah, NJ, USA, or equivalent) and acceptable black backgrounds are the black portion of an opacity card (such as Opacity Card Form 2A, Leneta Company, Inc, Mahwah, NJ, USA, or equivalent).
  • Opacity is determined by calculating the quotient of the Y tristimulus value using the black background divided by the Y tristimulus value using the white background and multiplying by 100%. Opacity is reported to the nearest integer percentage.
  • the Portion Delta E* Test Method (“PDETM”) is used to determine the color difference between the first portion and the second portion and yield a Delta E* value.
  • Delta E* is the calculated Euclidean distance between two color stimuli in the CIELAB color space.
  • CIELAB values of L * 2 , a * 2 , b * 2 the color difference or delta E* (DE*) between a second product with CIELAB values L * i, a * i, b * i is given by:
  • a spectrophotometer that can deliver CIELAB under CIE D65 illuminant conditions across the visible spectrum (such as Spectrophotometer CM-3600A, Konica Minolta, Japan, or equivalent) is used for this method.
  • the spectrophotometer is operated under conditions to deliver CIELAB values with 2° observer and D65 illuminant.
  • Portion samples are evaluated using a 10 mm path length in a plastic cell (such as CM-A131, Konica Minolta, Japan or equivalent), reflectance measurement, a 25.4mm aperture opening at the specimen surface, and specular component excluded.
  • a white background (such as the white portion of Opacity Card Form 2A, Leneta Company, Inc, Mahwah, NJ, USA, or equivalent) is used behind the 10 mm product sample.
  • L*, a*, and b* values are determined sequentially for both the first portion and the second portion and are recorded to the nearest hundredth.
  • the above formula is used to calculate Delta E*, which is reported to the nearest integer.

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Abstract

Un produit distribué de manière discontinue comprenant une première partie; et une seconde partie entourant au moins partiellement la première partie, produit un aspect de premier ordre et distinct pour les consommateurs.
EP19736915.0A 2018-06-29 2019-06-24 Produits à deux phases Withdrawn EP3813768A2 (fr)

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US20210128436A1 (en) 2021-05-06
US11571375B2 (en) 2023-02-07

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